In this chapter, we present a number of applications of the Arrowhead Framework with special attention to services related to awareness and optimization of energy consumption. First, we present the notion of FlexOffers as a general mechanism for describing energy flexibility. FlexOffers can be aggregated into larger flexibility units to be used as an Arrowhead service in the virtual market of energy [1]. This is followed by two examples on how to exploit such a flexibility service in the energy management of heatpumps and a campus building. Then we present two examples on how to exploit renewable energy to provide elevator services. Next, two examples of context aware services are described – smart lighting and smart car heating, and finally it is described how the Arrowhead Framework can play a role in the optimization of municipal service systems. In the final section, we indicate future work.